GB202201978D0 - Underlayer for magnetic recording medium - Google Patents
Underlayer for magnetic recording mediumInfo
- Publication number
- GB202201978D0 GB202201978D0 GBGB2201978.0A GB202201978A GB202201978D0 GB 202201978 D0 GB202201978 D0 GB 202201978D0 GB 202201978 A GB202201978 A GB 202201978A GB 202201978 D0 GB202201978 D0 GB 202201978D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- underlayer
- recording medium
- magnetic recording
- magnetic
- medium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/712—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the surface treatment or coating of magnetic particles
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/702—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/702—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent
- G11B5/7023—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent containing polyesters, polyethers, silicones, polyvinyl resins, polyacrylresins or epoxy resins
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70605—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys
- G11B5/70621—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys containing Co metal or alloys
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
- G11B5/70636—CrO2
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/714—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the dimension of the magnetic particles
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/716—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by two or more magnetic layers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
- G11B5/78—Tape carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/71—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the lubricant
Landscapes
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Magnetic Record Carriers (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/546,161 US11158340B2 (en) | 2019-08-20 | 2019-08-20 | Underlayer formulation for tape media |
PCT/IB2020/057358 WO2021033058A1 (en) | 2019-08-20 | 2020-08-04 | Underlayer for magnetic recording medium |
Publications (3)
Publication Number | Publication Date |
---|---|
GB202201978D0 true GB202201978D0 (en) | 2022-03-30 |
GB2602564A GB2602564A (en) | 2022-07-06 |
GB2602564B GB2602564B (en) | 2022-10-26 |
Family
ID=74645596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2201978.0A Active GB2602564B (en) | 2019-08-20 | 2020-08-04 | Underlayer for magnetic recording medium |
Country Status (6)
Country | Link |
---|---|
US (1) | US11158340B2 (en) |
JP (1) | JP2022545780A (en) |
CN (1) | CN114175155B (en) |
DE (1) | DE112020003904T5 (en) |
GB (1) | GB2602564B (en) |
WO (1) | WO2021033058A1 (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6691512B2 (en) | 2017-06-23 | 2020-04-28 | 富士フイルム株式会社 | Magnetic recording medium |
CN113436653B (en) | 2017-09-29 | 2022-04-26 | 富士胶片株式会社 | Magnetic tape and magnetic recording/reproducing apparatus |
CN111164686B (en) | 2017-09-29 | 2021-06-08 | 富士胶片株式会社 | Magnetic tape and magnetic recording/reproducing apparatus |
US11514944B2 (en) | 2018-03-23 | 2022-11-29 | Fujifilm Corporation | Magnetic tape and magnetic tape device |
US11361792B2 (en) | 2018-03-23 | 2022-06-14 | Fujifilm Corporation | Magnetic tape having characterized magnetic layer and magnetic recording and reproducing device |
US11361793B2 (en) | 2018-03-23 | 2022-06-14 | Fujifilm Corporation | Magnetic tape having characterized magnetic layer and magnetic recording and reproducing device |
US11514943B2 (en) | 2018-03-23 | 2022-11-29 | Fujifilm Corporation | Magnetic tape and magnetic tape device |
JP6830931B2 (en) | 2018-07-27 | 2021-02-17 | 富士フイルム株式会社 | Magnetic tapes, magnetic tape cartridges and magnetic tape devices |
JP6784738B2 (en) | 2018-10-22 | 2020-11-11 | 富士フイルム株式会社 | Magnetic tapes, magnetic tape cartridges and magnetic tape devices |
JP7042737B2 (en) | 2018-12-28 | 2022-03-28 | 富士フイルム株式会社 | Magnetic tape, magnetic tape cartridge and magnetic tape device |
JP6830945B2 (en) | 2018-12-28 | 2021-02-17 | 富士フイルム株式会社 | Magnetic tapes, magnetic tape cartridges and magnetic tape devices |
JP7003073B2 (en) | 2019-01-31 | 2022-01-20 | 富士フイルム株式会社 | Magnetic tapes, magnetic tape cartridges and magnetic tape devices |
US11158340B2 (en) | 2019-08-20 | 2021-10-26 | International Business Machines Corporation | Underlayer formulation for tape media |
US11158337B2 (en) | 2019-08-20 | 2021-10-26 | International Business Machines Corporation | Tape cartridge having tape media having synergistic magnetic recording layer and underlayer |
US11152027B2 (en) | 2019-08-20 | 2021-10-19 | International Business Machines Corporation | Tape media having synergistic magnetic recording layer and underlayer |
US11158339B2 (en) * | 2019-08-20 | 2021-10-26 | International Business Machines Corporation | Magnetic recording layer formulation for tape media |
US11790942B2 (en) | 2019-08-20 | 2023-10-17 | International Business Machines Corporation | Process for forming magnetic recording layer for tape media |
US11410697B2 (en) | 2019-08-20 | 2022-08-09 | International Business Machines Corporation | Process for forming underlayer for tape media |
JP6778804B1 (en) | 2019-09-17 | 2020-11-04 | 富士フイルム株式会社 | Magnetic recording medium and magnetic recording / playback device |
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US11158337B2 (en) | 2019-08-20 | 2021-10-26 | International Business Machines Corporation | Tape cartridge having tape media having synergistic magnetic recording layer and underlayer |
US11152027B2 (en) | 2019-08-20 | 2021-10-19 | International Business Machines Corporation | Tape media having synergistic magnetic recording layer and underlayer |
US20210056995A1 (en) * | 2019-08-20 | 2021-02-25 | International Business Machines Corporation | Process for forming tape media having synergistic magnetic recording layer and underlayer |
US11158340B2 (en) | 2019-08-20 | 2021-10-26 | International Business Machines Corporation | Underlayer formulation for tape media |
US11158339B2 (en) | 2019-08-20 | 2021-10-26 | International Business Machines Corporation | Magnetic recording layer formulation for tape media |
US11790942B2 (en) * | 2019-08-20 | 2023-10-17 | International Business Machines Corporation | Process for forming magnetic recording layer for tape media |
US11410697B2 (en) * | 2019-08-20 | 2022-08-09 | International Business Machines Corporation | Process for forming underlayer for tape media |
-
2019
- 2019-08-20 US US16/546,161 patent/US11158340B2/en active Active
-
2020
- 2020-08-04 CN CN202080053532.5A patent/CN114175155B/en active Active
- 2020-08-04 DE DE112020003904.8T patent/DE112020003904T5/en active Pending
- 2020-08-04 JP JP2022510164A patent/JP2022545780A/en active Pending
- 2020-08-04 GB GB2201978.0A patent/GB2602564B/en active Active
- 2020-08-04 WO PCT/IB2020/057358 patent/WO2021033058A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN114175155B (en) | 2023-08-29 |
CN114175155A (en) | 2022-03-11 |
US20210056993A1 (en) | 2021-02-25 |
DE112020003904T5 (en) | 2022-05-25 |
WO2021033058A1 (en) | 2021-02-25 |
US11158340B2 (en) | 2021-10-26 |
JP2022545780A (en) | 2022-10-31 |
GB2602564B (en) | 2022-10-26 |
GB2602564A (en) | 2022-07-06 |
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